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Choosing the right port system for your underwater housing is essential for achieving sharp, distortion-free images underwater. Whether you shoot wide-angle or macro, your port setup directly affects image quality, field of view, and usability.
Gears
Gears are control rings that allow manual focus or zoom operation of lenses inside underwater housings. They are essential for precise handling during a dive.
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Isotta Focus Ring for Olympus M.ZUIKO DIGITAL ED 12-40mm F2O€108.00 €89.26Backorder. Ready for shipment in 1 to 2 weeksIsotta Focus Ring for Olympus M.ZUIKO DIGITAL ED 12-40mm F2O Learn More
Isotta Zoom Ring for Olympus M.ZUIKO DIGITAL ED 14-42mm EZ€111.00 €91.74Backorder. Ready for shipment in 1 to 2 weeksIsotta Zoom Ring for Olympus M.ZUIKO DIGITAL ED 14-42mm EZ Learn More
Isotta Zoom Ring for Olympus ED 12-50mm for E-M5 MII and III€106.00 €87.60Backorder. Ready for shipment in 1 to 2 weeksIsotta Zoom Ring for Olympus ED 12-50mm for E-M5 MII and III Learn More
Isotta Zoom Ring for Olympus M.ZUIKO DIGITAL ED 12-50mm€111.00 €91.74Backorder. Ready for shipment in 1 to 2 weeksIsotta Zoom Ring for Olympus M.ZUIKO DIGITAL ED 12-50mm Learn More
Isotta Zoom Ring for Olympus M.ZUIKO DIGITAL ED 9-18mm F4-5€111.00 €91.74Backorder. Ready for shipment in 1 to 2 weeksIsotta Zoom Ring for Olympus M.ZUIKO DIGITAL ED 9-18mm F4-5 Learn More
Isotta Focus Ring for LEICA DG MACRO-ELMARIT 45 mm/F2.8-4.5€103.00 €85.12Backorder. Ready for shipment in 1 to 2 weeksFocus Ring for Panasonic LEICA DG MACRO-ELMARIT 45 mm/F2.8-4.5 ASPH./MEGA O.I.S. - H-ES045
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Isotta Focus Ring for LEICA DG SUMMILUX 12 mm/F1.4 ASPH.€103.00 €85.12Backorder. Ready for shipment in 1 to 2 weeksFocus Ring for Panasonic LEICA DG SUMMILUX 12 mm/F1.4 ASPH. - H-X012
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Isotta Focus Ring for LUMIX G FISHEYE 8mm F3.5 - H-F008€111.00 €91.74Backorder. Ready for shipment in 1 to 2 weeksFocus Ring for Panasonic LUMIX G FISHEYE 8mm F3.5 - H-F008
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Isotta Zoom Ring for LUMIX G VARIO 14-45 mm F3.5-5.6 ASPH./€103.00 €85.12Backorder. Ready for shipment in 1 to 2 weeksZoom Ring for Panasonic LUMIX G VARIO 14-45 mm F3.5-5.6 ASPH./MEGA O.I.S. - H-FS014045
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Isotta Zoom Ring for LUMIX G VARIO 14-42 mm F3.5-5.6 ASPH./P€229.00 €189.26Backorder. Ready for shipment in 1 to 2 weeksZoom Ring for Panasonic LUMIX G VARIO 14-42 mm F3.5-5.6 ASPH./POWER O.I.S. - H-PS14042
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Frequently asked questions about gears for underwater housings
What is a gear for an underwater housing?
A gear is a ring placed around a lens that allows you to control focus or zoom through the external controls of an underwater housing.
Do I need a gear for every lens?
Not always. Some lenses can be used without a gear, but for manual focus or zoom control, a compatible gear is required.
What is the difference between a focus gear and a zoom gear?
A focus gear is used to manually adjust focus, while a zoom gear allows you to change focal length on zoom lenses.
How do I know which gear I need for my underwater housing?
You can use port charts to find the correct gear for your specific lens, port and underwater housing.
Are gears brand specific?
Yes, gears are designed for specific lenses and underwater housing systems. Always check compatibility before choosing a gear.
Related articles about gears for underwater housings
- Posted: March 17, 2026Categories: Underwater HousingsRead more »
- Posted: August 26, 2024Categories: Underwater Housings
Read more »AOI underwater housings are compact, lightweight, and ergonomic. Depending on the lens you want to use with your camera, you'll need a matching AOI port, gear and AOI extension ring. AOI has created port charts where you can look up exactly which items you need to start underwater photography with your lens in the underwater housing.
- Posted: March 06, 2024Categories: Underwater Housings
Read more »Many Nauticam housings provide interchangeable ports, enabling the use of various lenses. However, different lenses may demand distinct ports and extension rings to maintain or correct for underwater optics. Certain lenses permit access to zoom and manual focus functions while inside the housing,